Steel-aluminum combined cathode butt joint by direct welding

Abstract

The utility model discloses a steel aluminum combined type cathode straight welding butt joint belongs to industrial electrochemistry equipment accessory technical field. The joint includes integrated coaxial cylindrical body, and the both ends of body are equipped with annular embedded sealing recess and annular embedded sealing boss respectively, and the inner wall of annular embedded sealing recess is equipped with T purple copper sealing pad layer, and the outer circumferential surface of annular embedded sealing boss is covered fluorine rubber elastic sealing layer, and the full surface of body covers the full dimension multilayer composite protective coating that is composed of epoxy zinc yellow primer bottom layer, nanometer SiO2 modified epoxy resin middle layer and PTFE modified nylon surface layer. The utility model solves the technical defects of poor sealing reliability, weak corrosion resistance, insufficient electric conductivity stability and low assembly adaptability of the existing steel aluminum combined type cathode straight welding butt joint, can guarantee the long -term stable operation of steel aluminum combined type cathode system, can effectively improve the operation stability and full life cycle economy of steel aluminum combined type cathode.

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